Extension Standards (RFC)

Status

Draft v1.0 - December 2024

Summary

This RFC establishes standards for community-contributed extensions to the AgentOS ecosystem, leveraging the existing ExtensionManager and ExtensionPack architecture.

Terminology

Extension: A discrete unit of functionality (tool, guardrail, workflow, etc.)
Extension Pack: A collection of related extensions distributed together
Extension Registry: The community repository for discovering and sharing extensions

Repository Structure

Monorepo Layout

voice-chat-assistant/
├── packages/
│   ├── agentos/                    # core runtime
│   └── agentos-extensions/         # git submodule to external repo
│       ├── README.md
│       ├── CONTRIBUTING.md
│       ├── packages/               # individual extension packages
│       │   ├── ext-search/
│       │   ├── ext-weather/
│       │   └── ext-template/
│       └── registry.json           # extension discovery manifest

External Repository

Repository: github.com/framersai/agentos-extensions

Community-driven with PR review process
MIT licensed
Automated CI/CD for publishing to npm

Extension Package Structure

Directory Layout

packages/ext-{name}/
├── src/
│   ├── index.ts           # main export
│   ├── tools/             # tool implementations
│   ├── guardrails/        # guardrail implementations
│   └── types.ts           # TypeScript definitions
├── test/
│   ├── unit/
│   └── integration/
├── docs/
│   └── README.md          # user documentation
├── examples/
│   └── basic.ts           # usage examples
├── package.json
├── tsconfig.json
├── LICENSE                # MIT required
└── manifest.json          # extension metadata

Package Naming Convention

NPM scope: @framers/agentos-ext-{name}
Repository folder: ext-{name}
Extension ID: com.framers.ext.{name}

Manifest Format

{
  "$schema": "https://agentos.sh/schemas/extension-manifest-v1.json",
  "id": "com.framers.ext.search",
  "name": "Web Search Extension",
  "version": "1.0.0",
  "description": "Adds web search capabilities to AgentOS agents",
  "author": {
    "name": "Your Name",
    "email": "email@example.com",
    "url": "https://github.com/username"
  },
  "license": "MIT",
  "keywords": ["search", "web", "research"],
  "agentosVersion": "^2.0.0",
  "categories": ["productivity", "research"],
  "repository": {
    "type": "git",
    "url": "https://github.com/framersai/agentos-extensions"
  },
  "extensions": [
    {
      "kind": "tool",
      "id": "webSearch",
      "displayName": "Web Search",
      "description": "Search the web for information",
      "entry": "./dist/tools/webSearch.js"
    }
  ],
  "configuration": {
    "properties": {
      "search.provider": {
        "type": "string",
        "enum": ["serper", "serpapi", "brave"],
        "default": "serper",
        "description": "Search API provider"
      },
      "search.apiKey": {
        "type": "string",
        "description": "API key for search provider",
        "secret": true
      }
    }
  },
  "dependencies": {
    "axios": "^1.6.0"
  }
}

Extension Implementation

Tool Extension Template

// src/tools/webSearch.ts
import type { 
  ITool, 
  ToolExecutionContext, 
  ToolExecutionResult,
  JSONSchemaObject 
} from '@framers/agentos';

export class WebSearchTool implements ITool {
  readonly id = 'com.framers.ext.search.webSearch';
  readonly name = 'webSearch';
  readonly displayName = 'Web Search';
  readonly description = 'Search the web for information using configured search API';
  readonly version = '1.0.0';
  
  readonly inputSchema: JSONSchemaObject = {
    type: 'object',
    properties: {
      query: {
        type: 'string',
        description: 'Search query'
      },
      maxResults: {
        type: 'integer',
        minimum: 1,
        maximum: 10,
        default: 5
      }
    },
    required: ['query']
  };
  
  readonly outputSchema: JSONSchemaObject = {
    type: 'object',
    properties: {
      results: {
        type: 'array',
        items: {
          type: 'object',
          properties: {
            title: { type: 'string' },
            snippet: { type: 'string' },
            url: { type: 'string' }
          }
        }
      }
    }
  };
  
  readonly permissions = {
    requiredScopes: ['internet.access'],
    requiredCapabilities: ['web-search']
  };
  
  async execute(
    input: { query: string; maxResults?: number },
    context: ToolExecutionContext
  ): Promise<ToolExecutionResult> {
    try {
      const config = context.configuration?.['search'] || {};
      const provider = config.provider || 'serper';
      const apiKey = config.apiKey;
      
      if (!apiKey) {
        return {
          success: false,
          error: 'Search API key not configured'
        };
      }
      
      // Implementation here...
      const results = await this.performSearch(input.query, apiKey, provider);
      
      return {
        success: true,
        output: { results }
      };
    } catch (error) {
      return {
        success: false,
        error: error instanceof Error ? error.message : 'Search failed'
      };
    }
  }
  
  private async performSearch(query: string, apiKey: string, provider: string) {
    // Provider-specific implementation
    switch(provider) {
      case 'serper':
        return this.searchWithSerper(query, apiKey);
      case 'serpapi':
        return this.searchWithSerpAPI(query, apiKey);
      default:
        throw new Error(`Unknown provider: ${provider}`);
    }
  }
  
  // ... provider implementations
}

Extension Pack Export

// src/index.ts
import type { ExtensionPack, ExtensionPackContext } from '@framers/agentos';
import { WebSearchTool } from './tools/webSearch';
import { ResearchAggregatorTool } from './tools/researchAggregator';

export function createExtensionPack(context: ExtensionPackContext): ExtensionPack {
  return {
    name: '@framers/agentos-ext-search',
    version: '1.0.0',
    descriptors: [
      {
        id: 'webSearch',
        kind: 'tool',
        payload: new WebSearchTool(),
        priority: 10,
        enableByDefault: true,
        metadata: {
          category: 'research',
          requiresApiKey: true
        },
        onActivate: async (ctx) => {
          ctx.logger?.info('Web Search tool activated');
        }
      },
      {
        id: 'researchAggregator', 
        kind: 'tool',
        payload: new ResearchAggregatorTool(),
        priority: 10,
        enableByDefault: false
      }
    ]
  };
}

export default createExtensionPack;

Testing Requirements

Unit Tests

// test/unit/webSearch.spec.ts
import { describe, it, expect, vi } from 'vitest';
import { WebSearchTool } from '../../src/tools/webSearch';

describe('WebSearchTool', () => {
  it('validates input schema', () => {
    const tool = new WebSearchTool();
    expect(tool.inputSchema.required).toContain('query');
  });
  
  it('handles missing API key gracefully', async () => {
    const tool = new WebSearchTool();
    const result = await tool.execute(
      { query: 'test' },
      { configuration: {} } as any
    );
    expect(result.success).toBe(false);
    expect(result.error).toContain('API key');
  });
});

Integration Tests

Must test with actual AgentOS runtime:

// test/integration/extension.spec.ts
import { AgentOS } from '@framers/agentos';
import createExtensionPack from '../../src';

describe('Search Extension Integration', () => {
  it('registers with AgentOS', async () => {
    const agentos = new AgentOS();
    const manifest = {
      packs: [{
        factory: () => createExtensionPack({ 
          manifestEntry: {} as any,
          source: { sourceName: 'test' }
        })
      }]
    };
    
    await agentos.initialize({ 
      extensionManifest: manifest,
      // ... other config
    });
    
    const tool = agentos.toolExecutor.getTool('webSearch');
    expect(tool).toBeDefined();
  });
});

Documentation Standards

Required Documentation

README.md - User-facing documentation with:
- Installation instructions
- Configuration guide
- Usage examples
- API reference
- Troubleshooting
API.md - Technical reference:
- Full TypeScript interfaces
- Method signatures
- Event descriptions
- Error codes
CHANGELOG.md - Version history following Keep a Changelog

Example README Template

# Web Search Extension for AgentOS

Enable web search capabilities for your AgentOS agents.

## Installation

\`\`\`bash
npm install @framers/agentos-ext-search
\`\`\`

## Configuration

Add to your AgentOS configuration:

\`\`\`typescript
import { createExtensionPack } from '@framers/agentos-ext-search';

const config = {
  extensionManifest: {
    packs: [{
      package: '@framers/agentos-ext-search',
      options: {
        search: {
          provider: 'serper',
          apiKey: process.env.SERPER_API_KEY
        }
      }
    }]
  }
};
\`\`\`

## Supported Providers

- **Serper** - 2,500 free queries ([Sign up](https://serper.dev))
- **SerpAPI** - 100 free/month ([Sign up](https://serpapi.com))
- **Brave** - 2,000 free/month ([Sign up](https://brave.com/search/api))

## Usage

Agents with search tools enabled can:
- "Search for latest AI news"
- "Research renewable energy"
- "Find information about quantum computing"

Publishing Process

Version Management

Follow Semantic Versioning
Breaking changes require major version bump
New features require minor version bump
Bug fixes require patch version bump

Release Workflow

# 1. Update version
npm version patch|minor|major

# 2. Build and test
npm run build
npm test

# 3. Publish to npm
npm publish --access public

# 4. Create GitHub release
git tag v1.0.0
git push --tags

Automated CI/CD

GitHub Actions workflow for:

Linting and type checking
Unit and integration tests
Build verification
NPM publishing on release
Registry update

CI/CD Infrastructure

Free for Community Contributors

We provide FREE GitHub Actions CI/CD for all community extensions! This includes:

✅ Automated testing on Node 18 & 20
✅ Code coverage reporting via Codecov
✅ Automated npm publishing on version bump
✅ GitHub releases with changelogs
✅ Documentation generation
✅ Dependency updates via Dependabot
✅ Security scanning
✅ Extension validation

Automated Workflows

On Pull Request

Extension validation (structure, naming, license)
Linting and type checking
Unit and integration tests
Coverage reporting
Security scanning

On Push to Master

Build all modified extensions
Run full test suite
Generate documentation
Update registry

On Version Bump

Verify tests pass
Build production bundle
Publish to npm
Create GitHub release
Update extension registry

Community Guidelines

Contributing Process

Fork agentos-extensions repository
Create feature branch: feat/extension-name
Implement extension following standards
Add comprehensive tests
Update registry.json
Submit PR with:
- Description of functionality
- Test results
- Documentation
- Examples

Code Review Criteria

Extension Categories

productivity - Task automation, organization
research - Information gathering, analysis
communication - Messaging, notifications
development - Coding, debugging tools
data - Processing, transformation
integration - Third-party services
utility - General purpose tools

Security Guidelines

API Key Management

Never hardcode API keys
Use environment variables or secure configuration
Mark sensitive fields with secret: true in manifest
Document required permissions clearly

Sandboxing

Extensions run in AgentOS context
No direct file system access unless permitted
Network requests must be declared
Resource limits enforced by runtime

Migration Path

From Hardcoded Tools

For tools currently in backend/src/tools/:

Extract to extension package
Implement ITool interface
Add manifest.json
Publish to npm
Update personas to use extension

Future Considerations

Extension Marketplace

Web UI for browsing extensions
Ratings and reviews
Usage analytics
Verified publisher badges

Extension Development Kit

npx create-agentos-extension my-extension

Visual Studio Code Extension

IntelliSense for extension APIs
Manifest validation
Testing integration
Publishing commands

References

Appendix: Quick Start Template

# Clone template
git clone https://github.com/framersai/agentos-extensions
cd packages/ext-template

# Rename and configure
mv ext-template ext-myextension
npm init

# Install dependencies
npm install

# Develop
npm run dev

# Test
npm test

# Build
npm run build

# Publish
npm publish

Status​

Summary​

Terminology​

Repository Structure​

Monorepo Layout​

External Repository​

Extension Package Structure​

Directory Layout​

Package Naming Convention​

Manifest Format​

Extension Implementation​

Tool Extension Template​

Extension Pack Export​

Testing Requirements​

Unit Tests​

Integration Tests​

Documentation Standards​

Required Documentation​

Example README Template​

Publishing Process​

Version Management​

Release Workflow​

Automated CI/CD​

CI/CD Infrastructure​

Free for Community Contributors​

Automated Workflows​

On Pull Request​

On Push to Master​

On Version Bump​

Community Guidelines​

Contributing Process​

Code Review Criteria​

Extension Categories​

Security Guidelines​

API Key Management​

Sandboxing​

Migration Path​

From Hardcoded Tools​

Future Considerations​

Extension Marketplace​

Extension Development Kit​

Visual Studio Code Extension​

References​

Appendix: Quick Start Template​